Steep 2 hibiscus tea bags in hot water for 5 minutes. Remove tea bags and place tea in a medium pot. Add the star anise, cloves, and tapioca and brings to a boil, making sure to stir. Allow the tapioca to cook for 10 minutes. Add the xylitol sugar sub and vanilla and stir. Place tapioca mixture in a glass bowl to cool for 30-45 minutes.
Meanwhile, chop mangoes and mix in blueberries. Once tapioca is cooled, fold in the fruit and place mixture in the fridge for an hour to set.
Take 3 Tablespoons xylitol and place in a coffee grinder to make into powder. Add the powder into the whipped cream in a small bowl. Whip the cream until there are stiff peaks. Refrigerate until ready to assemble parfaits.
Using 1 cup parfait glasses, spoon 1/4 cup tapioca into the bottom of each glass. Add 1/4 cup whipping cream and repeat with another layer each of the tapioca and cream topping with one candied hibiscus flower.
Refrigerate before eating or consume.